I've been working on this on and off for a couple of weeks. It's a caged automata butterfly. I think it will "fly".

I just thought I'd post it for comment before I send it off for printing in WSF. All separations are at least .5mm ... anything very close will be .5mm, like when a bar goes through a hole, or the closest distance between gears, for example. For scale reference, the whole piece is about 13.5 cm tall.